Combined door closer and check.



PATENTED APR. so, 1907.

- w. N. AMSBARY.

COMBINED DOOR CLOSER AND CHECK.

APPLICATION TILED DEO.12,1905.

Inventor, by I Witnesses:

Attorneys.

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STATES PATENT OFFICE.

WILLIAM N. AMSBARY, OF SEATTLE, WASHINGTON ASSIGNOR OF ONE-HALF TO FRED MCCOY AND ONE-HALF TO GEORGE H. THOMAS, BOTH OF SEATTLE, WASHINGTON.

COMBINED DOOR CLOSER AND CHECK.

Specification of Letters Patent.

Patented April 30, 1907.

To all whom it may concern: 1

Be it known that 1, WILLIAM N. AMSBARY, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a new and useful Combined Door Closer and Check, of which the following is a specification.

This invention relates to a combined door closer and check.

The object of the invention is to provide a device of the character stated, adapted more particularly for use in connection with screen doors, wherein the number of parts employed is reduced to a minimum, and in which such parts are so constructed and assembled that the maximum of efficiency and durability is secured with the minimum of danger of derangement in use.

With the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a door closer and check as will be hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification, and in which like characters of reference indicate corresponding parts: Figure 1 is a view in side elevation, partly in section exhibiting the device of the present invention as it appears in position upon a door. Fig. 2 is a view in front elevation.

Referring to the drawings L designates the lintel of a door frame and R the top rail of an ordinary screen door, and as these parts may be of the usual or any preferred construction, further description is deemed unnecessary.

The present invention resides in the novel form of door closer and check, by which closing of the door will be positively effected, and any slamming thereof prevented.

The invention comprises a cylinder 1 within which is mounted a piston 2 having connected with it a piston rod 3 that projects beyond the outer or open end of the cylinder, the latter being provided with an air vent 4 intermediate of its ends. As usual, the piston does not tightly iit the cylinder, it being designed that on the final closing of the door, any compressed air confined between the piston and the closed or inner end of the cylinder will be permitted to escape past the piston, and thereby secure the gradual closing of the door without slamming or jarring.

The cylinder is provided at its rear or closed end with a perforated lug 6 which is mounted for swinging movement between the ears 7 of a bracket 8 which is secured to the lintel, the pin 9 that passes through the ears and through the lug serving to secure the assemblage of the parts.

Encircling the exterior of the cylinder is a coiled spring 10 one terminal of which is secured by hooking in an eye or keeper 11 disposed at the rear portion of the cylinder, and the other end of which is secured in an eye or loop 12 carried by an arm 13 rigidly secured to the piston rod by a set screw 14 for permit ting the arm to be adjusted lengthwise of the piston rod to vary the tension of the spring. The piston rod is of round cross section so that the arm 13 which slips on the same can be angularly adjusted in order to bring the end of the spring 10 and arm together for the purpose of hooking them, as in assembling the parts of the device. The outer or free end of the piston rod is provided with an eye 15 which engages a reduced pintle or stud 16 carried by the upturned end 17 of a bracket 18 that is secured to the top rail of the door as by screws or bolts 19, a pin 20 passing through the pintle 16 serving to prevent accidental separation of the piston rod therefrom. By simply taking out the pin 20 and unhooking the spring 10 from the arm 13, the piston and its rod can be readily taken out of the cylinder for inspection, repair, cleaning or oiling. Since the spring 10 is attached to the cylinder and to the arm 011 the piston rod by hook and eye connections, the spring can be readily detached in case it is broken and a new one substituted.

In the operation of the device, when the door is open, the piston rod is partly withdrawn at the same time the spring 10 is stretched and thus placed under tension.

WVhen the door is released, the spring will cause it rapidly to close until the piston passes the vent 4 whereupon rapid inward movement will be checked by the cushion of air housed between the piston and the inner end of the cylinder, and as the air gradually escapes, due to the approximate loose lit of the piston, the door will slowly but entirely close without jar or impact.

Having thus described the invention, what is claimed is A door closer and check comprising a cylinder cast one piece with one end open and having a perforated lug, formed at the closed endand extendingoutwardly from the center thereof, a bracket secured to a door casing and pivotally connected to said lug, a helical extension spring encircling the cylinder and of substantially the same length as the cylinder and adapted to expand and contract over the open end thereof, a hook and eye connection for securing the spring to the cylinder adjacent the closed end, a piston in the cylinder, a piston rod round in cross section and connected with the piston and extendin through the open end of the cylinder an provided with an eye at its outer extremity,

an arm mounted on the said rod for adjustment longitudinally and angularly thereon, a set screw for holding the said arm in adjusted position, a hook and eye connection beremovable pin to hold the piston rod and pin in operative position. I

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses:

WILLIAM N AMSBARY.

WVitnesses:

S. A. EsRY, EDWARD S. BAKEWELL. 

